Square Inches to Square Feet Converter — in² to ft²
Convert any area in square inches to square feet (÷ 144), and also see the equivalent in square centimetres, square metres and square yards — all exact, from the international inch definition.
in²
ft² = in² ÷ 144 (because 1 ft = 12 in, so 1 ft² = 12² = 144 in²)
1 foot = 12 inches, so 1 ft² = 12 × 12 in²
Divide your area by 144
- 1
Inches per foot
1 ft = 12 in → 1 ft² = 12² = 144Area scales by the square of the length ratio. - 2
Square feet
144 ÷ 144 = 1
How does this calculator work?
Divide square inches by 144 to get square feet, because 1 foot = 12 inches and area scales by the square (12 × 12 = 144). For example, 288 in² ÷ 144 = 2 ft². The converter also shows the equivalent in cm² (× 6.4516), m² (× 0.00064516), and yd² (÷ 1,296).
Formula
How this is calculated
Because one foot is exactly 12 inches, a square foot is a 12 in × 12 in square containing exactly 144 square inches. To go from square inches to square feet you divide by 144 — no rounding, no approximation. Going the other way (feet to inches) multiply by 144.
The metric conversions are equally exact. One inch is defined as 25.4 mm = 2.54 cm, so one square inch equals 2.54² = 6.4516 cm² and 0.00064516 m². Square yards follow from 1 yd = 36 in, so 1 yd² = 36² = 1,296 in², and you divide by 1,296 to convert.
All four outputs are computed simultaneously from your input so you can read whichever unit your project requires. The conversion factors are internationally standardised and exact to the precision shown.
Frequently asked questions
Exactly 144 square inches. One foot is 12 inches, and since area scales by the square, one square foot is 12 × 12 = 144 square inches.
Multiply by 144. For example, 2.5 ft² × 144 = 360 in². The calculator can be used in reverse by dividing the result you want: ft² × 144 = in².
Exactly 6.4516 cm², derived from the international inch definition: 1 in = 2.54 cm, so 1 in² = 2.54² = 6.4516 cm².
Also known as
TG we-Calculate Editorial Team. (2026). Square Inches to Square Feet Converter — in² to ft² [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/square-inch-to-square-foot-converter
TG we-Calculate Editorial Team. "Square Inches to Square Feet Converter — in² to ft²." TG we-Calculate. 2026. https://we-calculate.com/calculator/square-inch-to-square-foot-converter.
TG we-Calculate Editorial Team, "Square Inches to Square Feet Converter — in² to ft²," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/square-inch-to-square-foot-converter
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